HD6473887 Datasheet, PDF (401/523 Pages) Renesas Technology Corp – Hitachi Single-Chip Microcomputer

15.2.3 AC Characteristics
Table 15-3 lists the control signal timing, and tables 15-4 and 15-5 list the serial interface timing
of the H8/3887 Series.
Table 15-3 Control Signal Timing
V_CC = 1.8 V to 5.5 V, AV_CC = 1.8 V to 5.5 V, V_SS = AV_SS = 0.0 V, Ta = –20°C to +75°C
(including subactive mode) unless otherwise indicated.
Applicable Values
Reference
Item
System clock
oscillation
frequency
Symbol Pins
Min Typ Max Unit Test Condition
f_OSC
OSC₁, OSC₂ 0.4 —
6
MHz V_CC = 4.5V to 5.5 V
0.4 — 4
V_CC = 3.0V to 5.5 V
0.4 — 3.2
V_CC = 2.6V to 5.5 V
0.4 — 2
V_CC = 2.2V to 5.5 V
0.4 — 1
Except the above
Figure
*²
OSC clock (ø_OSC) t_OSC
cycle time
OSC₁, OSC₂ 167 —
250 —
313 —
500 —
1000 —
2500 ns V_CC = 4.5V to 5.5 V
2500
V_CC = 3.0V to 5.5 V
2500
V_CC = 2.6V to 5.5 V
2500
V_CC = 2.2V to 5.5 V
2500
Except the above
Figure 15-1
*²
Figure 15-1
System clock (ø) t_cyc
cycle time
2
—
128 t_OSC
— — 244.1 µs
Subclock oscilla- f_W
tion frequency
X₁, X₂
—
32.768 —
kHz
or 38.4
Watch clock (ø_W) t_W
cycle time
Subclock (ø_SUB) t_subcyc
cycle time
X₁, X₂
—
30.5 or —
µs
26.0
2
—8
t_W
Figure 15-1
*¹
Instruction cycle
time
Oscillation
t_rc
stabilization time
2
—
—
t_cyc
t_subcyc
OSC₁, OSC₂ —
20
45
µs V_CC = 2.2 V to 5.5 V (In Figure 15-10
case of Figure 15-10) *²
— 0.1 8
ms V_CC = 2.2 V to 5.5 V (In Figure 15-10
case of Figure 15-10)
— — 50 ms Except the above
Oscillation
t_rc
stabilization time
X₁, X₂
— — 2.0 s
384